Acquisitions Sinclair Logistics and Storage (Details) (Sinclair [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2009	Dec. 02, 2009 MMBbls
Business Acquisition [Line Items]
Storage Capacity, Hydrocarbon Storage Tanks		1,400,000
Business Acquisition, Cost of Acquired Entity, Purchase Price		$ 79.2
Business Acquisition, Cost of Acquired Entity, Cash Paid		25.7
Business Acquisition, Cost of Acquired Entity, Other Noncash Consideration		4.2
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares	1,373,609
Business Acquisition, Purchase Price Allocation, Property, Plant and Equipment		30.2
Business Acquisition, Purchase Price Allocation, Goodwill Amount		49.1
Business Acquisition, Purchase Price Allocation, Liabilities Assumed		0.2
Capital Units [Member]
Business Acquisition [Line Items]
Stock Issued During Period, Value, Acquisitions	53.5	$ 53.5